// Difference between cpp and c language
// When you still use gcc compiler, there will be something wrong, you should use "-lstdc++" to continue
// You can use ".cxx"and  ".c"and "C" and "cpp" and ".cc" as suffix, but ".cpp" is used more fluently
// All standard types, objects, and functions are located in the std namespace



#include <stdio.h>
#include <iostream>


int main(void)
{
	printf( "Hello world \n" );				// c language style
	std::cout << "hello world" << std::endl;		// cpp styple

	return 0;
}

